Koizumi-san is a reserved and mysterious high school girl.
Her classmate Ohsawa Yuu is very interested in this new transfer student. 
One day on her way home, she happens to see Koizumi-san in a long line in front of a ramen shop, which leads to them eating ramen together, and yet...
Oh, I know!
.صحيح، عرفت
Ah, alles klar. Daran muss es liegen.
Auf der Tafel stand es geschrieben!
¡Ya sé!
¡Ya sé!
Ah, je sais !
Ah, giusto, sarà quello!
Oh, já sei!
А, точно же!